irmd: Check if entry actually exists

The prog table was consulted for a name of a program, which may not
exist, thus prog_entry_del_name potentially got a NULL reference
passed.

Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/irmd/main.c b/src/irmd/main.c
index f3a3ff87..19875d1c 100644
--- a/src/irmd/main.c
+++ b/src/irmd/main.c
@@ -844,6 +844,11 @@ static int unbind_program(char * prog,
                 prog_table_del(&irmd.prog_table, prog);
         else {
                 struct prog_entry * en = prog_table_get(&irmd.prog_table, prog);
+                if (en == NULL) {
+                        pthread_rwlock_unlock(&irmd.reg_lock);
+                        return -EINVAL;
+                }
+
                 prog_entry_del_name(en, name);
 
                 e = registry_get_entry(&irmd.registry, name);